Alstom Technology Limited

General Electric Technology Gmbh

Alstom Technologies Ltd

Lawrence Joseph Czarnecki

John Carl Buschmann

Mikael Larsson

Frederic Zenon Kozak

Barath Baburao

Mou Jian

Alimustapha Tabikh

Matthew Reed Cage

Lars Filip Lundin

Michael Thomas Lambert

John Buschmann

The present application provides a mobile selective catalyst reduction system for use at a remote location. The mobile selective catalyst reduction system may include a first trailer with an ammonia delivery system and a tempering air system mounted thereon in whole or in part and a second trailer with a selective catalyst reduction section mounted thereon in whole or in part. The ammonia delivery system, the tempering air system, and/or the selective catalyst reduction section are permanently mounted on the first trailer or the second trailer for use at the remote location.

Mobile selective catalyst reduction system

A method for reducing mercury emission and/or re-emission in cleaned flue gas through control of dissolved mercury species concentration within a wet flue gas desulfurization (WFGD) system is disclosed. One method for reducing mercury emission and/or re-emission through control of dissolved mercury species concentration is to measure the dissolved mercury species concentration of an aqueous alkaline slurry used in a WFGD system and/or measuring mercury concentration of cleaned flue gas from a WFGD system and comparing the same to a predetermined dissolved mercury species concentration value and/or a predetermined mercury concentration value. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is above the predetermined values therefor, the amount of cyclodextrin additive supplied to the system is increased. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is below the predetermined values, the amount of cyclodextrin additive supplied to the system is decreased.

Mercury re-emission control

A catalytic reactor () is provided for purposes of effecting therewith the removal of nitrogen oxides from a process gas (F) that includes at least two catalyst bed segments (), each of which is provided with a closing device (). The catalytic reactor () is operative for causing said process gas (F) to flow through a first catalyst bed segment (). Said process gas (F) is at a first temperature at which the sulphur trioxide that is entrained in said hot process gas is at least partially precipitated out on to the catalytic material that said first catalyst bed segment () embodies. Periodically said closing device () is operated in order to thereby isolate said first bed segment () from the flow therethrough of said hot process gas (F). A regeneration system () is also provided that is operative for purposes of causing a regenerating gas to flow through the first bed segment (). In addition, a sulphur trioxide removal device () is provided, which is separate from said catalytic reactor (), and which is operative for purposes of effecting therewith the removal of the sulphur trioxide from said regenerating gas.

Method and a device for removing nitrogen oxides and sulphur trioxide from a process gas

A method of protecting a NOx reducing catalystfrom fouling, where the NOx reducing catalystis downstream of a circulating fluidized bed (CFB) boilerand upstream of a particulate removal device. The method includes introducing a SOremoving reagentin a calcium to sulfur molar ratio greater than that required for SOremoval from a flue gasgenerated by a CFB, thereby preventing SOformation and fouling of the NOx reducing catalyst

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Knoxville, TN, United States of America

Lawrence Joseph Czarnecki